Question

a dealer earns a profit of12% after selling a book at 10%discount on the printed price find the ratio of the CP and the printed price of the book​

Answer 1

Let the CP be 100

Hence,SP=100+12% of 100

=112

If the marked price be X, then

90% Of X = 112

⇒x = 112 × 100/90

⇒x = Rs11209

Hence,

Required ratio = 100 : 1120/9

=900 : 1120

=45 : 56

Answer 2

$\underline{ \underline{ \large \sf \color{blue}\mathfrak{Solution}}}$


$\sf \: Printed \: price = Rs. 100$


$\sf \: Selling \: price = 90 \% \: of \: 100 = Rs.90$


$\sf \: Cost \: price = \frac{100}{112} \times 90 = Rs. \: \frac{4500}{56}$


$\sf \: Cost \: price : Printed \: price = \frac{4500}{56} \ratio \: 100$


$\sf \blue{ \to}4500 \ratio \: 5600$


$\sf \blue{\to}45 \ratio \: 56$